The surface area of a sphere is found using the formula sa=4πr^2, where r is the radius. if the surface area of a sphere is 64π square feet, what is the radius, in feet?

Figure abcd is a parallelogram. if point c lies on the line x = 2, what is the y-value of point c

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

Find the solutions for a triangle with a =16, c =12, and b = 63º